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[PATCH] reset USB controller


From: Vladimir 'phcoder' Serbinenko
Subject: [PATCH] reset USB controller
Date: Wed, 15 Jul 2009 22:51:55 +0200

Hello, some BIOSes don't conform semaphore specification about handing
over the control on UHCI and/or EHCI controller. Most OS cope with it
by taking ownership regardless after some timeout. This however
increases booting time. Also some OSes don't cope with this quirk
correctly and are unable to access some devices. Here is a module to
forcibly remove BIOS ownership without timeout. It adds 2 commands:
ehcireste and uhcireset. I choose to name both functions analogously
even if actually only UHCI is really reset

-- 
Regards
Vladimir 'phcoder' Serbinenko

Personal git repository: http://repo.or.cz/w/grub2/phcoder.git




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